Designed to Fit Princess Canister Original Manufacture's Numbers: Not Sure if these Bags fit your Model? Drop Us A Line From Messaging! To protect your motor and maintain peak suction power change bags when 2/3 full. When Vacuuming fine particles such as powder, plaster dust, etc., change bags more frequently. Do not reuse or overfill dust bags as a loss of cleaner suction and/or bag breakage may occur. New Item: New Items Have Never Been Used. These Items are Still Covered Under Our Return Policy.